After his victory and recovery, Harsh came to be considered a legend, and EmperorPalpatine personally promoted him to Moff. Given control of the Bosph sector, Harsh ruled with an iron fist, bombarding the planet Bosph and killing many of its inhabitants on Palpatine's orders. Following the Emperor's death, Harsh, who had taken residence on the planet Otunia, conspired with the Human Seth Kabul to take control of the mining company Kabul Industries. With company head Lorn Kabul, Seth's brother, out of the way, Seth could then partner the company with the Empire. Lorn was successfully killed, but his daughter, Arista Kabul, survived and destroyed the mines used by Kabul Industries, ruining Harsh's plans.

Sometime after the Emperor's death, Lorn Kabul, the head of the Otunia-based mining company Kabul Industries, was unwilling to enter his company into a partnership with the Empire. Displeased with the decision, Harsh made arrangements with Kabul's brother, Seth, to have Lorn killed,[1] after which Harsh would gain easier access to the raw material from the mine in exchange for performing political favors for Seth.[8] Seth would set charges in a mining tunnel, which he would detonate when Lorn and his daughter, Arista Kabul, were visiting for inspection. After significant delays to the plan, Harsh contacted Seth by hologram to demand the scheme move forward, and the event took place the next day. The charges successfully detonated, and Lorn was killed, allowing Seth to take his place as head of the company and create the partnership Harsh wanted. The Moff then traveled to the Kabul Estate in person, along with Imperial forces, to occupy and secure it for Seth.[1]

Arista Kabul, however, had not been killed in the explosion, of which Seth had become aware and sent men out to correct, without informing Harsh. Arista, along with her Gamorrean companion, Grissom, sneaked into the Kabul Estate shortly after Harsh arrived and visited Seth. Instead of killing Seth, Arista and Grissom had Tek, a Jawa criminal, destroy the Kabul mines,[1] leaving her uncle with nothing,[8] following which they fled the planet.[1]

As a boy, Harsh dreamed of one day joining the Imperial Navy and commanding such huge vessels as Imperial Star Destroyers like the toy he owned. Even from a young age, however, he was combative and violent, attacking another child with a rock for destroying his property. The senator who mentored Harsh taught him a great deal about politics, especially the importance of winning political battles as well as military ones. When wounded at Chabosh, Harsh deemed having a cybernetic limb as being incomplete and thus refused treatment and threatened other patients to ensure he got his way,[2] willing his leg to heal instead.[6] When made Moff of the Bosph sector, Harsh did not let himself become complacent and ruled his territory with an iron fist.[2]

During his work with Seth Kabul, Harsh became angry at his co-conspirator when there were numerous delays to the plan, although the amount of wealth the plan would earn Harsh pleased him.[1] He was a wise and charismatic individual.[2] Harsh had pale skin, browneyes, and was bald when working with Seth Kabul.[1]